159 citations · 705 across the 19 of their papers we have counts for
19 papers
Large-scale on-chip integration of gate-voltage addressable hybrid superconductor-semiconductor quantum wells field effect nano-switch arrays
Kaveh Delfanazari, Jiahui Li, Peng Ma +10
Stable, reproducible, scalable, addressable, and controllable hybrid superconductor-semiconductor (S-Sm) junctions and switches are key circuit elements and building blocks of gate…
Extracting Quantitative Dielectric Properties from Pump-Probe Spectroscopy
Arjun Ashoka, Ronnie R. Tamming, Aswathy V. Girija +12
Optical pump-probe spectroscopy is a powerful tool for the study of non-equilibrium electronic dynamics and finds wide applications across a range of fields, from physics and chemi…
Automatic virtual voltage extraction of a 2x2 array of quantum dots with machine learning
Giovanni A. Oakes, Jingyu Duan, John J. L. Morton +3
Spin qubits in quantum dots are a compelling platform for fault-tolerant quantum computing due to the potential to fabricate dense two-dimensional arrays with nearest neighbour cou…
Experimental evidence for topological phases in the magnetoconductance of 2DEG-based hybrid junctions
Kaveh Delfanazari, Llorenc Serra, Pengcheng Ma +9
While the application of out-of-plane magnetic fields was, so far, believed to be detrimental for the formation of Majorana phases in artificially engineered hybrid superconducting…
Experimental realization of a quantum dot energy harvester
G. Jaliel, R. K. Puddy, R. Sánchez +6
We demonstrate experimentally an autonomous nanoscale energy harvester that utilises the physics of resonant tunnelling quantum dots. Gate defined quantum dots on GaAs/AlGaAs high-…
Imaging bulk and edge transport near the Dirac point in graphene moiré superlattices
Ziwei Dou, Sei Morikawa, Alessandro Cresti +9
Van der Waals structures formed by aligning monolayer graphene with insulating layers of hexagonal boron nitride exhibit a moiré superlattice that is expected to break sublattice s…
Observation of Coulomb blockade in nanostructured epitaxial bilayer graphene on SiC
Cassandra Chua, Arseniy Lartsev, Jinggao Sui +9
We study electron transport in nanostructures patterned in bilayer graphene patches grown epitaxially on SiC as a function of doping, magnetic field, and temperature. Away from cha…
Sensitive radio-frequency measurements of a quantum dot by tuning to perfect impedance matching
N. Ares, F. J. Schupp, A. Mavalankar +9
Electrical readout of spin qubits requires fast and sensitive measurements, but these are hindered by poor impedance matching to the device. We demonstrate perfect impedance matchi…
Magnetic field induced charge redistribution in disordered graphene double quantum dots
K. L. Chiu, M. R. Connolly, A. Cresti +3
We have studied the transport properties of a large graphene double quantum dot under the influence of background disorder potential and magnetic field. At low temperatures, the ev…
Direct Imaging of Coherent Quantum Transport in Graphene Heterojunctions
E. D. Herbschleb, R. K. Puddy, P. Marconcini +5
We fabricate a graphene p-n-p heterojunction and exploit the coherence of weakly-confined Dirac quasiparticles to resolve the underlying scattering potential using low temperature…
Statistical study of conductance properties in one-dimensional quantum wires focussing on the 0.7 anomaly
L. W. Smith, H. Al-Taie, F. Sfigakis +9
The properties of conductance in one-dimensional (1D) quantum wires are statistically investigated using an array of 256 lithographically-identical split gates, fabricated on a GaA…
Quantum Hall Effect and Quantum Point Contact in Bilayer-Patched Epitaxial Graphene
C. J. Chua, M. R. Connolly, A. Lartsev +10
We study an epitaxial graphene monolayer with bilayer inclusions via magnetotransport measurements and scanning gate microscopy at low temperatures. We find that bilayer inclusions…
Charge and spin state readout of a double quantum dot coupled to a resonator
K. D. Petersson, C. G. Smith, D. Anderson +3
State readout is a key requirement for a quantum computer. For semiconductor-based qubit devices it is usually accomplished using a separate mesoscopic electrometer. Here we demons…
Scanning gate microscopy of current-annealed single layer graphene
M. R. Connolly, K. L. Chiou, C. G. Smith +5
We have used scanning gate microscopy to explore the local conductivity of a current-annealed graphene flake. A map of the local neutrality point (NP) after annealing at low curren…
Coulomb Charging Effects in an Open Quantum Dot
O. A. Tkachenko, V. A. Tkachenko, D. G. Baksheyev +6
Low-temperature transport properties of a lateral quantum dot formed by overlaying finger gates in a clean one-dimensional channel are investigated. Continuous and periodic oscilla…
Spin-dependent transport in a quasiballistic quantum wire
C. -T. Liang, M. Pepper, M. Y. Simmons +2
We describe the transport properties of a 5 m long one-dimensional (1D) quantum wire. Reduction of conductance plateaux due to the introduction of weakly disorder scattering are…
Spin-dependent transport in a clean one-dimensional channel
C. -T. Liang, M. Y. Simmons, C. G. Smith +3
A shoulder-like feature close to , "the 0.7 structure" at zero magnetic field was observed in clean one-dimensional (1D) channels [K.J. Thomas et al., Phys. R…
Experimental Evidence for Coulomb Charging Effects in an Open Quantum Dot at Zero Magnetic Field
C. -T. Liang, M. Y. Simmons, C. G. Smith +3
We have measured the low-temperature transport properties of an open quantum dot formed in a clean one-dimensional channel. For the first time, at zero magnetic field, continuous a…
Resonant transmission through an open quantum dot
C. -T. Liang, I. M. Castleton, J. E. F. Frost +5
We have measured the low-temperature transport properties of a quantum dot formed in a one-dimensional channel. In zero magnetic field this device shows quantized ballistic conduct…